Full Breakdown
Thailand Ends 25-Year Joint Offshore Energy Exploration Pact with Cambodia
5/6/2026, 3:11:51 AM
Termination and Recent Tensions
On 5 May 2026 the Thai cabinet cancelled the 2001 Memorandum of Understanding (MOU 44) that created a joint framework for offshore oil and gas exploration in overlapping Gulf of Thailand waters. Prime Minister Anutin Charnvirakul said the move fulfilled an election pledge and was unrelated to the border dispute. Two armed clashes along the 817-km border in 2025 killed about 150 people and displaced hundreds of thousands; a cease-fire brokered by U.S. President Donald Trump has held since late December.
Key Figures and Official Positions
Prime Minister Anutin Charnvirakul ordered the cancellation; Foreign Minister Sihasak Phuangketkeow said it aims to keep negotiations alive. Cambodian Foreign Minister Prak Sokhonn expressed regret, will seek compulsory conciliation under UNCLOS, and said the move departs from the spirit and political will of the pact, reaffirming Cambodia’s legal rights. Thai officials stress the decision does not abandon talks and that UNCLOS will guide future demarcation.
Data and Implications
The MOU was signed in 2001, marking 25 years of deadlock. The land border is 817 km. The 2025 clashes caused roughly 150 deaths and displaced hundreds of thousands. Cancelling the MOU shifts dispute resolution to UNCLOS, potentially delaying joint hydrocarbon projects.
Opposition, Conflicts & Gaps
Thai nationalist opposition has long criticised the MOU as ceding territory. Bangkok maintains the termination is unrelated to the border clashes, while Phnom Penh says it breaches the agreement’s cooperative spirit. The cancellation will not be legally effective until Thailand sends a formal notice, a detail not yet confirmed by either side.
Verbatim Quotes
- “Cancelling the deal is not related to the border conflict with Cambodia, but part of my policy. It has been 25 years and there has been no progress,” — Anutin Charnvirakul, Prime Minister of Thailand
- “Cambodia’s decision to pursue compulsory conciliation under UNCLOS reaffirms its commitment to resolving maritime disputes peacefully and in accordance with international law,” — Prak Sokhonn, Foreign Minister of Cambodia
- “a departure from the spirit and political will that enabled our two countries to establish a framework for peacefully resolving these issues in accordance with international law.” — Prak Sokhonn, Foreign Minister of Cambodia
Outlook
The ASEAN 48th summit (6-8 May 2026) will host bilateral talks on the sidelines. Cambodia will file a compulsory conciliation request under UNCLOS; Thailand says future resource discussions will continue under the same convention in a “new context.”
